[Linux Views]Handle focus traversing correctly.

This CL adds a wrapper window class on top of GtkWindow to intercept its
move_focus method, so that we can handle focus traversing by ourselves.

BUG=49204: Chrome/views toolbar "tab" accessibility broken.
TEST=See bug report.

Review URL: http://codereview.chromium.org/3013006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@53123 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 43 insertions, 0 deletions

diff --git a/views/widget/gtk_views_window.h b/views/widget/gtk_views_window.h
new file mode 100644
index 0000000..0dd54be
--- /dev/null
+++ b/views/widget/gtk_views_window.h
@@ -0,0 +1,43 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef VIEWS_WIDGET_GTK_VIEWS_WINDOW_H_
+#define VIEWS_WIDGET_GTK_VIEWS_WINDOW_H_
+
+#include <gtk/gtkwindow.h>
+
+// GtkViewsWindow is a subclass of GtkWindow that overrides its move_focus
+// method so that we can handle focus traversing by ourselves.
+
+G_BEGIN_DECLS
+
+#define GTK_TYPE_VIEWS_WINDOW        (gtk_views_window_get_type ())
+#define GTK_VIEWS_WINDOW(obj) \
+    (G_TYPE_CHECK_INSTANCE_CAST((obj), GTK_TYPE_VIEWS_WINDOW, GtkViewsWindow))
+#define GTK_VIEWS_WINDOW_CLASS(klass) \
+    (G_TYPE_CHECK_CLASS_CAST((klass), GTK_TYPE_VIEWS_WINDOW, \
+                             GtkViewsWindowClass))
+#define GTK_IS_VIEWS_WINDOW(obj) \
+    (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_VIEWS_WINDOW))
+#define GTK_IS_VIEWS_WINDOW_CLASS(klass) \
+    (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_VIEWS_WINDOW))
+#define GTK_VIEWS_WINDOW_GET_CLASS(obj) \
+    (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_VIEWS_WINDOW, GtkViewsWindow))
+
+typedef struct _GtkViewsWindow        GtkViewsWindow;
+typedef struct _GtkViewsWindowClass   GtkViewsWindowClass;
+
+struct _GtkViewsWindow {
+  GtkWindow window;
+};
+
+struct _GtkViewsWindowClass {
+  GtkWindowClass parent_class;
+};
+
+GtkWidget* gtk_views_window_new(GtkWindowType type);
+
+G_END_DECLS
+
+#endif  // VIEWS_WIDGET_GTK_VIEWS_WINDOW_H